. The Canadian naturalist and geologist. Natural history -- Periodicals. 154 Silurian Fossils of Nova Scotia. 25. MuRCHisoNiA Arisaigensis. N. sp. Shell teretely conical, volutions about five, gradually increasing from the apex, rounded with a slight angulation or carina in the middle. The surface is unknown and the angular band on the volution is the only means of determining its generic rela- tions. This differs from any of the described species of Murchisonia from American localities. 26. Murchisonia aciCulata. N. sp. Shell slender, very gradually tapering, volutions about six or seven, the
. The Canadian naturalist and geologist. Natural history -- Periodicals. 154 Silurian Fossils of Nova Scotia. 25. MuRCHisoNiA Arisaigensis. N. sp. Shell teretely conical, volutions about five, gradually increasing from the apex, rounded with a slight angulation or carina in the middle. The surface is unknown and the angular band on the volution is the only means of determining its generic rela- tions. This differs from any of the described species of Murchisonia from American localities. 26. Murchisonia aciCulata. N. sp. Shell slender, very gradually tapering, volutions about six or seven, the last ones moderately ventricose, aperture elongate-oval or ovate, rounded at the anterior margin, columella plain ; volu- tions marked by a distinct band along the centre, and a sub-sutu- ral carina marking the upper side of the volutions; surface striated. Fig. 13. Fig. 15. Fig. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Natural History Society of Montreal. Montreal, Dawson
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